名词
中文翻译：难干集料
同义词：
['hard-setting aggregate', 'hard-setting material']
例句：
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1. The construction of this road requires a hard-to-dry aggregate mixture.
修建这条道路需要一种难干集料混合物。
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2. The engineers used a hard-to-dry aggregate to improve the durability of the concrete.
工程师们使用了难干集料来提高混凝土的耐久性。
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3. The construction company was required to use only hard-to-dry aggregate in their projects.
建筑公司被要求在其项目中只使用难干集料。